package com.example.dllo.my36kr.db;

import android.os.Handler;
import android.os.Looper;

import com.example.dllo.my36kr.model.CollectBean;
import com.example.dllo.my36kr.myapp.BaseApplication;
import com.example.dllo.my36kr.ui.activity.AbsBaseActivity;
import com.litesuits.orm.LiteOrm;
import com.litesuits.orm.db.assit.QueryBuilder;

import java.util.ArrayList;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;


/**
 * Created by CPC_272 on 16/8/29.
 * <p>
 * 数据库的操作类
 * 使用单例模式,因为LiteOrm要求
 * 其他数据库框架 GreenDao,OrmLite
 */
public class DBTool {
    //liteOrm 对象,曾删改查方法 都操作此对象
    private LiteOrm mLiteOrm;
    //Handler 用来做线程切换,为了在主线程来执行回调,返回数据
    private Handler mHandler;

    //线程池
    ExecutorService threadPool = Executors.newFixedThreadPool(5);


    private static DBTool ourInstance = new DBTool();

    public static DBTool getInstance() {
        return ourInstance;
    }


    private DBTool() {
        //初始化liteOrm对象
        //使用MyApp里的全局Context
        //第二个参数是 数据库的名字
        mLiteOrm = LiteOrm.newSingleInstance(BaseApplication.getContext(), "MyDataBase.db");
        //初始化Handler
        //Handler的构造方法 参数如果传
        // Looper.getMainLooper()
        // 代表这个Handler 一定会回调到主线程
        // 属于严谨的写法

        mHandler = new Handler(Looper.getMainLooper());

    }

    //向数据库插入一个用户

    public void insertUser(final CollectBean collectBean) {
        threadPool.execute(new Runnable() {
            @Override
            public void run() {
                if (!hasCollectBean(collectBean)) {
                    mLiteOrm.insert(collectBean);
                }
            }
        });

    }
     //去重复
    private boolean hasCollectBean(CollectBean collectBean) {
        ArrayList<CollectBean> query = mLiteOrm.query(CollectBean.class);
        for (CollectBean bean : query) {
            if (bean.getUrl().equals(collectBean.getUrl())) {
                return true;
            }
        }
        return false;
    }

    //查询用户名的方法

    public void queryUesr(final QueryListener queryListener) {

        threadPool.execute(new Runnable() {
            @Override
            public void run() {
                ArrayList<CollectBean> collectBean = mLiteOrm.query(CollectBean.class);

                mHandler.post(new HandlerRunnable(collectBean, queryListener));
            }
        });


    }

    class HandlerRunnable implements Runnable {

        ArrayList<CollectBean> collectBeans;

        QueryListener mQueryListener;


        //构造方法
        public HandlerRunnable(ArrayList<CollectBean> collectBean, QueryListener queryListener) {

            collectBeans = collectBean;
            mQueryListener = queryListener;


        }

        @Override
        public void run() {

            mQueryListener.onQueryComplete(collectBeans);
        }

    }

    public interface QueryListener {

        void onQueryComplete(ArrayList<CollectBean> nativeBeen);


    }

}

